... regulate the mucosal immune responses upon a variety of stimuli, including lacticacidbacteria (LAB) LAB are a group of related bacteria that produce lacticacid as a result of carbohydrate fermentation ... THE ROLES OFLACTICACIDBACTERIA IN HOST INFLAMMATORY RESPONSES WANG SHUGUI (B.Sc., Sun Yat-Sen University) A THESIS SUBMITTED FOR THE DEGREE OF PHILOSOPHY OF DOCTORATE DEPARTMENT OF MICROBIOLOGY ... bacteria that produce lacticacid as a result of carbohydrate fermentation The production oflacticacid results a very low pH which is low enough to inhibit the growth of most other microorganisms...
... buffering capacity of the medium are known The amount of undissociated lacticacid is then further related to the total amount oflacticacid LaHtot and the pH by the lacticacid chemical equilibrium ... concentrations of undissociated lacticacid [LaH] and hydrogen ions [H + ], originating from the lacticacid produced by the micro-organism Transition of the exponential growth phase towards the ... lacticacid present in a surface liquid layer with known dimensions, the adapted model describes the concentrations of cells and lacticacid in a liquid medium Microbial growth and lactic acid...
... Effect of bile acid on the cell membrane functionality oflacticacidbacteria for oral administration Res Microbiol 157:720–725 doi: 10.1016/j.resmic.2006.04.002 Thongsom M (2004) Lacticacidbacteria ... Poult Sci 5:593–597 Ammor S, Tauveron G, Dofour E, Chevallier I (2006) Antibacterial activity oflacticacidbacteria against spoilage and pathogenic bacteria isolated from the same meat small-scale ... are evaluated as beneficial bacteria by their product of acids (lactic acid) , bacteriocin or bacteriocin-like substances Putrefactive bacteria are regarded as harmful bacteria in that they decompose...
... Isolation of cholesterol-lowering lacticacidbacteria 393 Table Number of acid- and bile-tolerant lacticacidbacteria isolated from the human intestine for probiotic use Acida Bileb BSHc Streptococcus ... Woestyne M, Christiaens H, Verstraete W Significance of bile-salt hydrolytic Isolation of cholesterol-lowering lacticacidbacteria activities of lactobacilli J Appl Bacteriol 1995, 79, 292-301 ... agar plate Bacteria were preprocessed with reagents to extract fatty acid from the bacterial cell-wall and identified with microbial identification system (MIDI, Inc., USA) Isolation of bacteria: ...
... Holzapfel WH: Lacticacidbacteriaof foods and their current taxonomy International Journal of Food Microbiology 1997, 36:1-29 Ouwehand AC, Salminen S, Isolauri E: Probiotics: an overview of beneficial ... parameters were followed as described Evaluation of peripheral white blood cell counts At the end of the prophylactic protocol of mouse ACD, the blood of each mouse was taken and white blood cell ... diminution of PMN extravasation in the ear of mice The diminution of neutrophils extravasation as suggested by blood PMN counts was confirmed by the reduction of neutrophil content in ear of 62.4%...
... value of fruit juice fermented by lacticacidbacteria (LAB) Four isolates oflacticacidbacteria from mango were obtained The results of research showed that all 10 strains oflacticacidbacteria ... hours Count density oflacticacid bacteria: plate counting method Monitor the indicators: Brix, pH, level oflacticacid after fermentation and the density oflacticacidbacteria Analyze the ... survive and grow at this pH The cause of the decrease in pH was due to the development oflacticacidbacteria that produced lacticacid Content oflacticacid produced from isolates from Ybio...
... select lacticacidbacteria and to study the favorable conditions oflacticacid fermented carrot juice with biological values The content of this study includes: - Isolation oflacticacidbacteria ... Isolation oflacticacidbacteria 3.2 Study on low pH tolerance of isolates 3.3 Study on lacticacid fermentation ability of isolates in carrot juice 10 3.4 Identification of the ... tolerance of isolates - Study on lacticacid fermentation ability of isolates in carrot juice - Identification of the selected lacticacidbacteria by molecular technique - Study on the effect of dilution...
... organic acids,… Dragon fruit juice is a suitable medium for lacticacidbacteria to produce new probiotic products Therefore, the study “Fermentation of dragon fruit juice by lacticacidbacteria ... hours of fermentation, pH decreased from 4.52 to about 3.23 – 4.31 At this pH, lacticacidbacteria could remain The pH decreased because due to the production oflacticacid during development of ... Characteristics of isolated bacteria strains: - Bacteria strains isolated from Antibio and Probio powder were rod-shaped bacteria They had the same characteristics of Lactobacillus acidophilus, the bacteria...
... for lacticacidbacteria to produce new probiotic products Therefore, the research “Fermentation of pineapple juice by lacticacidbacteria was carried out Objectives To isolate lacticacid ... into lacticacid inhibited the bacterial growth and development Besides, lacticacid itself could inhibit the development ofbacteria (Nguyen Thi Hien, 2006) In contrast, the treatment of 15 9% of ... characteristics, four isolated bacteria were lacticacidbacteria with following characteristics such as: gram-positive bacteria, catalase-negative, reducing lacticacid to dissolution of CaCO3, cocci or...
... oflacticacid 1.3 Production oflacticacid 1.3.1 Chemical synthesis 1.3.2 Fermentation 1.3.3 Lacticacid microorganisms 1.3.3.1 Lacticacidbacteria 1.3.4 Metabolic pathways oflacticacidbacteria ... 11.0 30 1.3.3.1 LacticacidbacteriaLacticacidbacteria (LAB) are a group of related bacteria that produce lacticacid as major product.31 LAB have the property of producing lacticacid from carbohydrates ... stereochemistry of PLA is complex because of the chiral nature oflacticacid monomers There are types of PLAs namely PLLA poly (levo -lactic acid) , PDLA poly (dextro -lactic acid) and PDLLA 18 poly (D,L-lactic...
... in Fig The natural pH of 1.96 × 10−4 M benzoic acid was 3.7 Solution of benzoic acid at pH 2.0 was prepared by adding required amounts of 0.1 M HCl and solutions of benzoic acid at pH 5.3, 9.1, ... / Journal of Colloid and Interface Science 284 (2005) 83–88 The aim of the present study is to determine the kinetics and equilibrium states of adsorption of benzoic acid onto high specific surface ... intervals of over a period of 125 Absorbance data were converted into concentration data using calibration relations predetermined at the wavelength of interest for the corresponding pH of benzoic acid...
... of One hundred and thirteen lacticacidbacteria isolates were obtained from seven fermented 742 World Appl Sci J., (5): 741-747, 2008 Table 1: Species and frequency of occurrence oflacticacid ... containing 90 ml of mESM broth and incubated at 30°C for 30h Samples were taken for analysis at the end of the fermentation period Isolation oflacticacid bacteria: Serial dilutions of homogenized ... on the occurrence oflacticacidbacteria spectrum, L plantarum constituted the highest number of LAB isolated from fermented plant materials The involvement of various types of LAB in fermented...
... Poly (lactic acid) fabric Figure Effect of time of heatsetting on the linearity of load extension in weft direction of knitted Ingeo™ Poly (lactic acid) Figure Mean effect of time of heatsetting ... [PLA] Figure Mean [Ā] of effect of time of heatsetting on the tensile extension EM [%] of Ingeo™ Poly (lactic acid) 3.2 Linearity of load extension curve LT [-] The linearity of load extension curve ... Ingeo Poly (lactic acid) (PLA) fabric Conclusion The effect of time of heatsetting on tensile properties of knitted Ingeo™ Poly (lactic acid) (PLA) was determined using the KES-FB system of fabric...
... Laboratory of Biocontrol and Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China 2Department of Botany and ... absence of ABA, 100% of wild-type seeds and more than 85% of WRKY18-overexpressing plants germinated (Figure 1A) In the presence of 0.5 and 1.0 μM ABA, however, the germination rates of WRKY18overexpressing ... SA [27] Because of their role in plant response to ABA and abiotic stresses, we performed quantitative RT-PCR to analyze the effects of ABA and abiotic stresses on expression of these three WRKY...
... ENGINEERED POLY(L -LACTIC ACID) -BASED NANOFIBERS FOR OSTEOGENIC DIFFERENTIATION OF HUMAN MESENCHYMAL STEM CELLS NGUYEN THI HIEN LUONG (B.Eng., Ho Chi Minh city University of Technology, Vietnam) ... Seeram Ramakrishna Electrospun Poly(L -lactic acid) Nanofibres Loaded with Dexamethasone to Induce Osteogenic Differentiation of Human Mesenchymal Stem Cells Journal of Biomaterials Science, Polymer ... Poly-L -lactic acid nanofibers for bone graft materials Proceedings of International Conference for Micro & Nanotechnologies for Biosciences, 16 18/11/2009, Switzerland Poster presentation iv Table of...
... organization 1.1 Overview of Poly (lactic acid) Poly (lactic acid) or Poly(lactide) (PLA) is a synthetic biopolymer oflactic acid, which can be derived by bacterial fermentation of carbohydrates from ... 152 IV List of Abbreviations List of Abbreviations PLA polylactic acid or polylactide sc stereocomplex PLLA poly(L -lactic acid) or poly(L-lactide) PDLA poly(D -lactic acid) or poly(D-lactide) ... their 50/50 blends XV List of Figures List of Figures Figure 1.1 Two enantiomeric forms oflactic acid: (S)- and (R)- 2-hydroxypropionic acid Figure 1.2 Three stereoisomers of lactide which lead to...
... Hybridization and Detection of Nucleic Acids 1.1.1 Basic of nucleic acid hybridization The nucleic acid is a polymer consists of monomers called nucleotides Each nucleotide composes of a nitrogenous base, ... 2.7 Effect of blocking in the hybridization of × 10 M of target (gray bars) and negative control samples (white bars) using CNT-based labels 93 Figure 2.8 The effects of specificity of bead conjugates ... and the efforts towards improving the sensitivity and specificity of assays with an emphasis on the electrochemical nucleic acids detection 1.1.2 Label-free detection of nucleic acids There are...
... of ethanol and produce high levels of acetic acid Carr media with 4%, 5%, 6%, 7%, 8%, 9% and 10% ethanol were used [4] Characterization and biochemical tests: After isolation of acetic acidbacteria ... Ribereau-Gayon, “Evolution of acetic acidbacteria during fermentation and storage of wine,” Appl Environ Microbiol., vol 48, 1984, pp.153-156 [2] G S Drydale and G H Fleet, “Acetic acidbacteria in som ... to produce acetic acid increasingly (Table I and Table II) Isolation of bacterial strain: For isolating bacterial strains that were responsible for vinegar smelling, 20 ml of Iranian white-red...
... kh o [1] J B Brian, Wood, The LacticAcid Bacteria, The LacticAcidBacteria in Health and Disease [2] A.F Harper, E.T Kornegay, K.L Bryant, H R Thomas, “Efficacy of virginiamycin and a commercialy-available ... Stanlet, “Comparison of two strains of Lactobacillus acidophilus as dietary adjuncts for young calves”, J Dairy Sci 63 (1980) 964 Study on characteristics oflacticacidbacteria isolated in ... Department of Biology, College of Science, VNU, 334 Nguyen Trai, Hanoi, Vietnam Department of Microbiology, National Institute of Nutrition, Yersin, Hanoi, Vietnam - Out of 50 isolated lactic bacteria...
... abundance ratio of the microcystin-degrading bacteria increased to approximately 0.005% of the total bacteria The number of cells increased in fall, and the number of microcystin-degrading bacteria ... further investigation of the dynamics of the bacteria in lakes with cyanobacteria is required CONCLUSION We successfully quantified the microcystin-degrading bacteria in a biofilm from a practical ... the mechanism of the degradation of microcystin Further studies, like the degradation of microcystins by bacteria without mlrA gene or analysis of the relationship between cyanobacteria and microcystin-degrading...